Sloane Stephens vs Janice Tjen Prediction (Sep 15, 2026)

Result: Sloane Stephens won. We gave Sloane Stephens 39% before the match, so our pick (Janice Tjen) was wrong.

Brier score (lower is better): ours 0.374, market six hours out 0.360.

Our modelJanice Tjen 61% · Sloane Stephens 39%
Market price at our callJanice Tjen 53%
EventGuadalajara · Clay
Scheduled startTue Sep 15, 2026, 05:00 PM ET
Call logged2026-09-14 21:17 UTC (before first serve)

Every call we make is logged before the match and graded after it. See the live tennis board, the full match list and our public track record.

All Guadalajara 2026 predictions · Sloane Stephens predictions

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